Luverne MegaStep 6 1 2" x 36" 100" Aluminum Running Boards Select Sprinter 2500 3500 Model 575100 570747 42" Style Under Bed Truck Box LocOut Option:Without LocOut Style Under Bed Truck Box Lock System 3 Point Latch Install Time (hours) 1 Material Aluminum Color Aluminum Construction Heavy Duty Welded Durability Maximum Key Alike On Request Latch Mechanism Latch Lid Construction Heavy Duty C Channel Reinforced Lid Profile Single Mounting Location Under Bed Opening Type Single Lid Security Extreme Warranty Limited Lifetime Weather Strip Memory Resistant D Shaped Ribbed Latch Yes Powder Coat Finish Yes UPC 783965042017 DIMENSIONS Extra wheel to wheel step pad for easier access when reaching into the truck bed giving you complete freedom to position the steps wherever you want them Their non skid rubber treads cover the entire topside of the boards